How far are you? I had some stringy brown stuff, which was blood, and turned out to be a placenta abruption. Probably should call your dr. and they will probably either have you come in or come in if you have any spotting...

Are you spotting at all...after you urinate and wipe, is there anything on the tissue? Or, have you had an internal or s_x within the past 48 hours...that can cause spotting sometimes too. Or, maybe you are starting to lose your mucus plug.